Any combination of race and class has become permitted, except some prestige lessons. (Beforehand, figures of some fantasy races/species weren't permitted to belong to some character courses.) Though even now referred to by TSR (and later Wizards with the Coastline) as being the 2nd edition, this revision is found by https://rafaelcpcna.eedblog.com/13297678/rumored-buzz-on-dungeons-dragons-editions